Nose assembly



Jan. 7, 1964 G. J. VAN HEKE 3,116,848

NOSE ASSEMBLY n 2 Sheets-Sheet l KQ am/w mmm w We a m# y Jan. 7, 1964 G. J. VAN HEcKE NOSE ASSEMBLY 2 Sheets-Sheet 2 Filed Deo. 10, 1962 United States Patent O 3,116,848 NOSE ASSEMBLY `George J. Van Hecke, Detroit, Mich., assigner to Huch Manufacturing Company, Detroit, Mich., a corporation of Michigan Filed Dec. 10, 1962, Ser. No. 244,855 14 Claims. (Cl. 218-42) This invention relates to apparatus for setting fasteners.

This application is a continuation-impart of my cepending United States application Serial Number 146,184 tiled October 19, 1961, now abandoned.

More specilically, the apparatus of this invention is a nose assembly for use with a standard pull gun apparatus for setting a rivet or fastener requiring a double acting type mechanism. An example of this type of a fastener is the conical keystone rivet which will 4be described in greater detail later.

In previous apparatus for setting a fastener of the above mentioned type either hydraulic or pneumatic actuation has been required. It is an object `of this invention to provide a novel double acting nose assembly which is aotuable either by hand or with a hydraulic or pneumatic tool.

It would be advantageous to be able to set a rivet of the above `described type with the same type of pull gun as is utilized in setting a conventional rivet requiring only a single action. Therefore, it is another object of this invention to provide a novel double acting nose assembly which is actuable by a standard or conventional type pull gun.

In presently used double acting devices of the hydraulic or pneumatic type for setting fasteners, usually some sort of valve means is required to shift the pressure causing the pulling force in order to provide the double action. Therefore, it is still another object of this invention to provide a double acting device which is actuable without the need of a shift valve mechanism.

Other objects, features, and advantages of the present inventionwill become apparent from the subsequent description and the appended claims, taken in conjunction with the accompanying drawings, in which:

FIGURE 1 is a side elevational sectional view of a nose assembly embodying the features or" this invention;

FIGURE 2 is a fragmentary sectional view showing a portion of the apparatus of FIGURE l in relation to a fastener which is to be set;

FIGURE 3 is a view similar to that of FIGURE 2 in which the fastener has been partially set;

FIGURE 4 is a view similar -to that of FIGURES 2 and 3 depicting another stage in the setting o-f the fastener;

FIGURE 5 is a side elevational sectional view of a modified nose assembly exemplifying features of the present invention, and

FIGURE 6 is a blownup sectional View of a portion of the view of FIGURE 5 of the modified nose assembly of FIGURE 5.

Looking now to FIGURE 1, the numeral 10 designates generally the nose assembly of this invention and comprises a tubular body member 12 having an internally threaded portion 14 at its rearward end and a radially inwardly extending shoulder portion 16 disposed -at its opposite forward end. A generally circularly shaped preload adjustment member 18 has its outside diameter portion 20 threaded and of Ia size to be threadably engaged with the threaded end portion 14 of the body member 12. The adjustment member 18 has an internally threaded bore 212 into which is threaded an externally threaded end 24 of an adapter member 26. The adapter member 26 is provided with a plurality of lugs 28 for attachment to the casing 13 of a pull fgun 11 (shown in phantom) of the type shown in the patent to L. C. Huck, No. 2,132,112.

3,116,848 Fatented Jan. 7, 1964 icc The adapter member 26 has an enlarged diameter bore 30 which is coaxial with @a reduced diameter bore 38. Matably disposed within the enlarged bore 3d is an enlarged diameter portion 32 of Ia connector member 314. The enlarged diameter portion 3'2 which is slidably disposed within the enlarged bore 30 has a threaded bore 36 extending partially axially therein ifor lthreaded engagement with a threaded end lof a spindle 15 (shown in phantom) `associated with the pull gun 11. Thus, in assembly, the adapter member 26 is secured to the casing 13 of the pull gun 1i by means of the lugs 23 while the connector member 34 is secured to the spindle 15 of the pull gun 11 by means of the threaded bore 36. The spindle 15 of the pull gun 1v1 is secured directly to the actuated piston thereof such that axial movement of the piston relative to the pull gun casing 13 causes a similar axial movement of the `connector member 34 relative to the adapter member 26.

The connector member 34 has a reduced diameter portion 4? located on the end opposite from the threaded bore 3-6 which terminates in an externally threaded stud portion 41 which is threadably engaged Within an internally threaded end portion 42 of a longitudinally extending generally circularly shaped draw bar member 46. The draw bar member 46 is slidably disposed within the reduced diameter bore 38 of adapter member 26 and has a longitudinally extending bore 48 which terminates` in the end portion 42. The longitudinally extending bore 48 is coaxial with a lreduced diameter bore 50 and cooperates therewith yto house a pin tail ejecting assembly 52 to be described in greater detail. The draw bar member 46 terminates in its end opposite the internally threaded end portion 42 in Ia reduced diameter portion 54 which is externally threaded and which is threadably engaged with an internally threaded end portion of a Igenerally tubularly shaped collet member 5 8 having a bore 99 extending longitudinally therethrough. The collet member 58 terminates at its end opposite the internally threaded end portion 56 in a frusto conically shaped bore 66 having a surface which extends axially inwardly and radially outwardly. The bore 60 is in alignment with the bore 99 and in communication therewith via an axially adjacent increased diameter section 97. Matably disposed within the frusto conical bore 69 is a plurality of chuck jaws 62 having an inclined external surface of a shape similar to that of the frusto conically shaped bore 601 and having a plurality of teeth 64 disposed internally and defining generally thereby, an aperture whereby the pin of the fastener assembly can be gripped in a manner to be described.

The chuck jaw assembly or plurality of chuck jaws 62 are urged axially outwardly by means of a compressively preloaded coil spring 66 `disposed internally within the collet member 58 and having one end bearing against the rearward `end `of the plurality of chuck jaws 62 and its other end bearing against the threaded end 54 of the draw bar member 46. Thus it can be seen that any relative axial movement between the connecting member 36 and the adapter 26 results in relative movement between the draw bar member 46 `and hence the collet member 5S, and between the body member l2. Extending radially and matably `about a portion of the draw bar member 46 and a portion of the Icollet member 5S is a first tubular sleeve member 68 which has one end abuttable with the forward end of the adapter member 26 and serves a purpose to be described. A second sleeve member 70 is externally radially and matably disposed over a portion of the collet member 58 and terminates at its forward end in a reduced diameter bore 72 lwhich is oounterbored as indicated by rthe numeral 74. Secured within the forward end of the second sleeve member 'itl is an axially rearwardly extending guide member '76 which has 1a flange portion 7 8 matably disposed Within the recess defined by the counter-bore 714 and a body portion 80 partialiy matably disposed within and extendingr axially rearwardly beyond the bore '72. A generally tubul-arly shaped outer anvil member 82 has an open end 84 whereby the member 32 is radially matably disposed about a forward portion of the irst sleeve member 68 and completely about the second sleeve member 70. The outer anvil member 82 terminates at its forward end in a generally axially outwardly extending anvil portion 86 which serves a purpose to be described. The anvil portion 86 has an axially extending `bore S8 into which is slidably disposed the shank 90 of a hollow inner anvil member 92. The inner anvil member 92 is retained within the outer anvil member 82 by means of a liangc portion 94.

Looking now to FIGURE l, the hollow inner anvil 92, the hollow guide member 76 and the aperture through the chuck jaws 62 dene an axially extending passageway 96 which communicates with the increased diameter bore 97, the bore 99, the reduced diameter bore 50 and the bore 48. The pin tail ejector assembly 52 comprises a plunger member 101 having an enlarged head 103 siidably disposed in the bore 48 and a coil spring member 105 which is comprcssively preloaded and is located in the bore 43 with one end in abutment with the connector member 36 and the other end in abutment with the head 103 to thereby urge the plunger member `101 axially forward. A stem portion 107 is secured to `and extends axially from the head 103 and through ythe ibores 50, 99, 97 and into the passageway 96 to eject pin tails in a manner to be seen.

The outer anvil member 82 has a plurality of lugs 100 which are engageable with a generally circularly shaped locking member 102 by which the outer anvil member 32 is secured to a reaction member 104. Looking now to FIGURE 1, the locking member 102 has an externally threaded portion 106 which is in threaded engagement with an internally threaded portion S disposed on the forward end of the reaction member 104. The opposite end of the reaction member 104 terminates in a iiange portion 110 which is abuttable with the shoulder 16 of the body 12.

Disposed within the internal cavity defined by the body I12 and 4the first sleeve member 68 are a plurality of alternately facing dished washers 1'12. The washers 112 are crcularly shaped and similar to the conventional type of washer except that the former are formed to have an arcuate cross-section by being axially dished at the center. The dished Washer members 112 are of the type commouly known as Belleville washer and each has an internal diameter suiiicient to clear the external diameter of the sleeve member 68 and an outside diameter suiiicient to clear the inside diameter of the tulbular body member 12. A number of dished washer members 112 are disposed within the body member '.12 such that one end of the plurality of -washers 112 contacts the reaction member 110 and the other end contacts a hat washer member 114 which is in contact with the preload adjustment member 18. Thus lit can be seen that as an axial force is applied between the adapter member 26 and the connecting member 34, a similar axial force is thus applied between the body member 12 and the outer anvil S2. This, of course, also results in a similar relative force between the body member `12 and the plurality of Belleville or dished washers 112 via the outer anvil 32 and reaction member 104. This reaction of the force from the outer anvil against the plurality of Belleville washers 112 serves a purpose to be described.

As previously mentioned, it was desired that the apparatus as shown in FIGURE 1 lbe usable to set a fastener of the keystone type. Looking now to FIGURE 2, this type of fastener comprises a generally tubular sleeve member 115 which has a shank 116 which extends through a pair of aligned apertures in and beyond the backside of a pair of workpieces generally indicated by the numerals 113 and 120 and has an enlarged head 122 in abutment with the front side of the pair of Workpieces 118 and 129.

Cit

tending axially outwardly from the head 122 is a frangible portion 124 which forms a keystone lock in a manner t0 be described. Extending through the sleeve is a pin member 126 having an enlarged head 128 which is engageable with the end of the shank "1-16 of the sleeve 115. Located progressively axially from the head 123 is a locking groove 130 and a breakneck groove 132. Located at the `end opposite from the enlarged head 128 is a plurality of gripping or pull grooves 134.

In operation, the pin member 126 is inserted into the passageway 96 and into contact rwith stem 107 moving the plunger 101 axially rearwardly against the force of the spring 105. At the same time, `the chuck jaws 62 are lheld open by virtue of the contact `with the guide member 76. Note that the jaws 62 are able to move radially outwardly by virtue of the increased diameter bore 97. Further axial movement of the nose assembly 10 towards the front plate causes the anvil portion 86 of the outer anvil 82 to contact the enlarged head portion 122. Note that the outside diameter ofthe keystone or frangible portion 124 is less than the diameter of the Ibore 88 in the anvil portion 86 suoh that the keystone portion 124 can extend therewithin, allowing Contact between the anvil portion 86 and the enlarged head 122. Note that at this time the inner anvil 92 is movable axially inwardly against the guide member 76, since a gap indicated by the numeral 136 (FIGURES 1 and 2) is provided between the first sleeve member 63 and the second sleeve member 70. This gap 136 provides for a lost motion action which serves a puupose to be described. Thus, essentially no load is applied against the frangible 'or keystone portion 124 of the fastener until the outer anvil is moved axially rear wardly for a preselected portion of the gap 136 and until the inner anvil is forced against ythe adapter 26 via the guide member 76, the second sleeve member 70, and the iirst sleeve member 68. As the pull gun (not shown) is actuated, an axial force is applied between the collet member 5S and the outer anvil member 82 which causes an axial force to be applied to the plurality of dished washers 112. The axial rearward movement of the collet member `58 causes the chtuck jaws 62 to be moved radially inwardly such that the teeth 64 engage the pull grooves 134 on the pin member 126. The plurality of washers 112 act as a spring and are compressible in a similar mauner. Since it is desirable that -initially there be no relative movement of the outer anvil 82 relative to` the body 12, a predetermined preload is applied therebetween by means of threading the adjustment member 1S inwardly into the body 12 such as to compress the plurality of washers 112 until the predetermined preload is obtained. Thus, until this preload is overcome, no axial relative movement between the outer anvil 82 and the body member 12 is possible. Thus, as an axial force is applied relative to the collet member 58 and the outer anvil member 82, the chuck jaw assembly 62 is moved axially rearwardly, thus bringing the enlarged head portion -128 of the pin into contact with the shank portion 116 of the sleeve 115, thereby forming the blind or bulbed head 137' (FIGURE 3). A further increase in the relative axial force overcomes the Icompressive preload tof the plurality of dished washers 112, allowing relative movement between the outer anvil member 82 and the body member 12. When this movement has occurred over a preselected distance, bringing the iirst sleeve member 68' into abutment with the second sleeve member 70, the inner anvil member 92 is forced axially outwardly to apply an axial load to the frangible or keystone portion 124 (see FIGURE 4). Note that at this time the inner anvil 92 is movable over only a portion of the distance of the gap 1136. As a further increase in force is applied to the inner `anvil member 92, the frangible portion 124 is severed from the head 122 and forced into the locking groove `130. A further axial force causes the pin '126 to sever at the breakneck groove 132, thereby completing the setting of the fastener. Note, then, that while the outer anvil 82 is movable relative to the body member 12 a given distance between two positions in setting the fastener, the inner anvil 92, due to the lost motion means, is movable a shorter distance relative to the outer anvil 82, which is the distance necessary to move the keystone into place.

By using a plurality of dished washers 112, a spring member having a high effective spring rate is formed; this allows the nose assembly as described to be constructed of a commercially practical size. Note that the adjustment member 18 can be threaded into the body 12 to attain the desired preload without disturbing the relationship between the adapter 26 and the body member 12.

Upon completion of the setting of the fastener, the severed portion of the pin 126 is ejected from the forward portion of the nose assembly 1i) by the stem 107 by virtue of the force from the spring 105 applied to the plunger member 161.

A modification of the nose assembly shown in FIG- URES l through 4, and previously described is shown in FIGURES 5 and 6. In the following description, components in the nose assembly of FIGURES 5 and 6, having similar functions to similar components in the assembly of FIGURES 1 4 will be given like numbers with the addition of a letter subscript. Thus, looking now to FIG- URES 5 and 6, the numeral lila designates a modified nose assembly which has a tubular body member 12a having an internally threaded portion 14a at its rearward end and having a radially inwardly extending shoulder portion 16a disposed at its opposite, forward end. A preload adjustment member 18a has lits outside diameter portion 2da threadably engaged within the threaded end portion 14a. The adjustment member 18a has an internally threaded bore 22a into which is threaded an externally threaded end 24a of an adaptor member 26a. The adaptor member 26a is provided with lugs 2&1 for attachment to a pull gun 11a of the type previously described. The adaptor member 26a has an enlarged diameter bore 30a in coaxial alignment with the reduced diameter bore 38a. Matably disposed within the enlarged bore Sila is an enlarged diameter portion 32a of a connector member 34a. The enlarged diameter portion 32a which is slidably disposed within the enlarged bore portion 39a has a reduced bore 36a into which is threaded the end of a spindie a (shown in phantom) associated with the pull gun 11a. The connector member 24a has a reduced diameter portion 40a located oppositely from the threaded bore 36a which terminates in an externally threaded stub portion 41a which is threadably engaged within an internally threaded end portion 42a of a longitudinally extending, generally tubular draw bar member 46a. The draw bar member 46a is slidably disposed within the reduced diameter bore 38a of adaptor member 2da and has a longitudinally extending bore ida which terminates in the end portion 42a. The bore 48a is coaxial with a reduced diameter bore 50a and cooperates therewith to house a pintail ejecting assembly 52a to be described in greater detail. The draw bar member 46a terminates in its end opposite the Iinternally threaded end portion 42a in a reduced diameter portion 54a which is externally threaded and which is threadably engaged with an internally threaded end portion of a generally tubularly shaped collet member 58a having a bore 99a extending longitudinally therethrough. The collet member Sdn terminates at its end opposite the internally threaded end portion 56a in a frusto conically shaped bore 60a. The bore 60a is in alignment with the bore 99a and in communication therewith via an axially adjacent increased diameter section 97a. Matably disposed within the frusto conical bore 60a is a plurality of chuck jaws 62a having a plural-ity of teeth 64a disposed internally to define an aperture whereby the pin of a fastener assembly can be gripped,

The chuck jaw assembly 62a is urged axially outwardly by means of a compressively preloaded coil spring 66a disposed internally within the collet member 58a. Ex-

tending radially and matably about a portion of the draw bar member 46a and about the collet member 58a is a tubular sleeve or thrust bushing member 68a which has its rearward end in abutment with the forward end of the adaptor 26a. The thrust bushing 63a terminates at its forward end in a reduced diameter bore 72a which is counterbored as indicated by the numeral 74a. Secured within the forward end of the thrust bushing 68a is an axially rearwardly extending hollow guide member 76a which has a ange portion matably disposed within the counterbore 74a and a body portion partially matably disposed within and extending axially rearwardly beyond the bore 72a.

A tubularly shaped outer anvil member 82a is opened at its rearward end whereby the anvil member 82a can be radially, matably disposed about a forward portion of the thrust bushing 68a. The outer anvil member 82a terminates at its forward end in a generally, axially outwardly extending anvil portion 86a. The anvil portion 86a has an axially extending bore 88a into which is slidably disposed a shank @da of a hollow inner anvil member 92a. The inner anvil member 92a is retained within the outer anvil member 82a by means of a iiange portion 94a.

The hollow inner anvil 92a, the hollow guide member 76a and the aperture through the chuck jaws 62a define an axially extending passageway which communicates with the increased diameter bore 97a, the bore 99a, the reduced diameter bore 50a and the bore 48a. The pintail ejector assembly 52a comprises a plunger member 161m and a coil spring member 1615er which is compressively preloaded within the bore 48:1 and urges the plunger member lilla axially forwardly to thereby urge a stem portion 17a axially outwardly to eject the pintail in the manner previously described in conjunction with the pintail ejector assembly 52.

The outer anvil member 32a terminates at its open end in a radially outwardly extending flange llliia which is engagcable with the shoulder 16a of a housing member 12a. The flange 100e is slidable within the internal surface of the tubular body member 12a while the body of the outer anvil member 82a is slidable within a bore in the forward end of the body member 12a.

An internal cavity is defined by the internal surface of the body 12a, the thrust bushing member dita, and the forward faces of the preload adjust member 18a and adaptor member 26a. A coil spring member 112a is maintained within that cavity under a compressive preload with one end bearing against a circular iiat washer member Illia which engages the forward face of the preload adjustment member 18a and with its opposite end bearing against iiange Milla forcing it into contact with shoulder 16a. The coil spring 112g is maintained under a preselected preload via the adjustment member 18a in the same manner as the Belleville washers 112 were maintained under a preload by the preload adjustment member 13. Thus the outer anvil member $2a is held outwardly by means of the preselected preload of the coil spring 112a.

In setting a fastener of the type described in conjunction with the embodiment shown in FIGURES 1-4, a relative axial force is applied between the outer anvil member 32a and the collet member 58a and hence the chuck jaw assembly 62a. The outer anvil member 82a, however, is maintained axially outwardly by means of a preload on the coil spring 112a. As the relative load applied between the pin and sleeve of the fastener increases, the force on the anvil member 82a reaches the preload of the coil spring 112a and as additional load is applied the outer anvil member 82a is moved axially inwardly into the body 12a thus allowing the inner anvil member 92a to be moved axially outwardly and into engagement with the keystone or frangible portion of the rivet sleeve; as additional relative axial force is applied and as the outer anvil 82a moves further axially rearwardly, the inner anvil 92a severs the keystone of the vsleeve wedging it into the locking groove.

As the relative axial force -is increased, the pin is severed at the breakneck groove in the manner previously described.

As the pin of the fastener is initially received within the nose assembly 10a of FIGURES 5 and 6, the outer anvil portion 86a of the outer anvil 82a engages the head of the rivet and the inner anvil member 92a is maintained a suficient distance axially inwardly `to be just out of contact with the frangible portion of the keystone or frangible portion of the rivet sleeve. The forward end i of the outer anvil member 82a is spaced from the forward end of the thrust bushing 68a a distance such that the keystone can be driven and the fastener completely set without engagement between `the forward ends of the member 82a and bushing 68a. Upon completion of the setting of the fastener, the severed portion of the pintail is ejected from the forward portion of the nose assembly 10 by the stem 10761 by virtue of the force of the spring 105'a applied to the plunger member lilla.

While it will be apparent that the preferred embodiments of the invention disclosed are well calculated to fulfill the objects above stated, it will be appreciated that the invention is susceptible to modification, variation and change without `departing from the proper scope or fair meaning of the subjoined claims.

What is claimed is:

1. Apparatus operable in response to the application thereto of a relative axial force from a gun member for providing a double action for setting a fastener of the typehaving a pin and a sleeve lto be set thereto comprising an elongated generally tubular body member, a generally tubularly shaped outer anvil member disposed at one end of said body and having an anvil portion forwardkly disposed thereon for engagement with the sleeve of the fastener and being movable axially relative to said body member to a tirst and a second position, a spring member disposed in said body for urging said outer anvil member axially outwardly toward said one end of said body to said first position at a selectable preload, chuck jaw means disposed within said outer anvil and movable axially therein for gripping the pin of the fastener responsively to an axial force applied thereto relative to said outer anvil member, means operatively associated with said chuck jaw means and said body member for applying therebetween the relative Iaxial force from the gun member, an inner anvil member disposed within said outer anvil member and being engageable with a portion of the sleeve of the fastener and thrust means being movable axially a preselected distance relative to said outer .anvil member and operatively connected to said inner anvil member for moving said inner anvil member said preselected distance.

2. The apparatus of claim l further including pintail ejecting means disposed within said body member for ejecting from said apparatus the severed portion of the pin after the setting of the fastener.

3. The apparatus of claim l in which said spring member comprises a plurality of alternately facing dished washers.

4. Apparatus operable in response to the application thereto of a relative axial force from a gun member for providing a double action for setting a fastener of the type having a pin and a sleeve to be set thereto comprising an elongated generally tubular body member, an outer anvil member disposed at one end of said body and having an anvil portion forwardly disposed thereon for engagement with 4the sleeve of the fastener and being movable axially relative to said body member to a rst and a second position, means including a plurality of dished washers disposed in said body for resiliently urging said outer anvil member axially outwardly toward said one end of said body to said rst position at a selectable preload, chuck jaw means disposed within said outer anvil member and movable axially therein for gripping the pin of the fastener responsively to an axial force applied thereto relative to said outer anvil member, an inner anvil member disposed within `said outer anvil member and being engageable with a portion of the sleeve of the fastener and being movable 4'axially a preselected distance relative to said outer anvil member, lost motion means engageable with said body member for moving said inner anvil member said preselected distance responsively to and after movement of said outer anvil member a predetermined distance towards said second position.

5. The apparatus of claim 4 in which said dished washers are disposed co-axially with alternate ones opening in opposite axial directions.

6. Apparatus operable in response to the application thereto of a relative axial force from a gun member for providing a double action for setting a fastener of the type having a pin and a sleeve to be set thereto comprising an elongated generally tubular body member, an outer anvil member disposed .at one end of said body and having an anvil portion forwardly disposed thereon for engagement with the sleeve of the fastener and being movable axially relative to said body member to a rst and a second position, a spring member disposed in said body for urging said outer anvil member axially outwardly toward said one end of said body to said rst position at a selectable preload, chuck jaw means disposed within said outer anvil and movable axially therein for gripping the pin of the fastener responsively to an :axial force applied thereto relative to said outer anvil member, means including an adapter member disposed at an end of said body member opposite from said one end operatively associated with said chuck jaw means and said body member for applying therebetween the relative axial force from the gun member, a preload adjustment member having a radially external portion threadably engaged internally with said opposite end of said body member and having a bore threadably engaged with said adapter member and being in contact with one end of said spring member for varying said preload on said spring member by being threaded within said body member and upon said adapter member, an inner anvil member disposed within said outer anvil member and being engageable with a portion of the sleeve of the fastener and being movable axially a preselected distance relative to said outer anvil member, 'lost motion means engageable with said body member for moving said inner anvil member said preselected distance responsively to and after movement of said outer anvil member a predetermined distance towards said second position.

7. The apparatus of claim 6 in which said spring member comprises a plurality of circularly shaped members having an arcuate cross-section.

8. Apparatus operable in response to the application thereto of a relative axial force from a gun member for providing a double action for setting a fastener of the type having a pin and a sleeve to be set thereto comprising an elongated generally tubular body member, a generally tubularly shaped outer anvil member disposed at one end of said body and having an anvil portion disposed thereon for engagement with the sleeve of the fastener and being movable axially relative to said body member to a first and a second position, disposed in said body for resiliently urging said outer anvil member axially outwardly toward said one end of said body to said first position at a selectable preload, means operatively associated with said spring member and said body member for varying said preload on said spring member, chuck jaw means disposed within said outer anvil and movable axially therein for gripping the pin of the fastener responsively to an axial force applied thereto relative to said outer anvil member, adapter means operatively associated with said chuck jaw means and said body member for applying therebetween vthe relative axial force from the gun member, an inner anvil member disposed within said aperture of said outer anvil member and being engageable with a portion of the sleeve of the fastener and being movable axially a preselected distance relative to said outer anvil member, lost motion means including a first sleeve member engageable with said adapter means and a second sleeve member axially ldisplaced from said iirst sleeve member and being engageable with said inner anvil member for moving said inner anvil member said preselected distance responsively to and after movement of said outer anvil member a predetermined distance towards said second position.

9. Apparatus operable in response to the application thereto of a relative axial force from a gun member for providing a double action for setting a fastener of the type having a pin and a sleeve to be set thereto, comprising .an elongated generally tubular body member having a radially inwardly extending shoulder :at one end and having an internally threaded portion at an opposite end, a generally tubularly shaped outer anvil member disposed at said one end of said body :and having an anvil portion with an axially extending aperture therethrough forwardly disposed thereon for engagement with the sleeve of the fastener and being movable axially relative -to said body member to a first and a second position, retaining and reaction means including a flange portion engageable with said shoulder on said body member for retaining said outer anvil member, chuck jaw means disposed within said outer anvil `and movable axially therein for gripping the pin of the fastener responsively to an axial force applied thereto relative to said outer anvil member, means including an adapter member disposed at said opposite end of said body member operatively associated with said chuck jaw means and said body member for applying therebetween the relative axial lforce from the gun member, a preload adjustment member having la radially external portion threadably engaged with said opposite end of said body member :and having a bore threadably engaged with said adapter member, spring means including a plurality of axially aligned dished washers having one end engageable with said flange portion of said retaining and reacting means for urging said outer anvil member axially outwardly and having its opposite end engageable with said preload :adjustment member and being under a compressive preload in accordance with the extent -to which said preload adjustment member is threaded relative to said body member and said adapter member toward said one end of said body member, an inner anvil member disposed `within said aperture of said outer anvil member and being engage- Iable with a portion of the sleeve of the fastener and being movable yaxially a preselected distance relative to said outer anvil member, lost motion means including a iirst sleeve member engageable with said adapter means and a second sleeve member axially disposed from said first sleeve member and being engageable with said inner anvil member for moving said inner anvil member said preselected distance responsively to and after movement of said `outer anvil member a predetermined distance towards said second position.

l0. Apparatus operable in response to the application thereto of a relative axial force `from 1a gun member for providing a double action for setting a fastener of a .type having a pin and a sleeve to be set thereto comprising: an elongated generally tubular body member, a generally tubularly shaped outer anvil member disposed at one end of said body member and having an anvil portion forwardly disposed thereon for engagement with the sleeve of the fastener and being movable axially relative to said body member to a first and a second position, a spring member disposed in said body member urging said outer anvil member axially outwardly toward said one end of said body to `said first position at a selectable preload with said outer anvil member being movable rearavardly to said second position after said preload is overcome, chuck jaw means disposed within said outer anvil and movable axially therein for gripping the pin of the fastener responsively to aan axial lforce applied thereto relative to said outer anvil member, means operatively associated with said chuck jaw means and said body member `for applying therebetween the relative axial force from lthe gun member, an inner anvil member disposed within said outer anvil member and being engageable with a portion of the Sleeve of the fastener, and thrust means for reacting the load on said inner anvil member and for locating said inner anvil member at a preselected axial position relative to said outer anvil member and at a fixed position relative to said body member wherein said inner anvil member travels a preselected distance relative to said outer anvil member to operate on the fastener as said outer anvil member moves rearwardly against said preload of said spring member to said second position.

11. Apparatus operable in response to the application thereto of a relative axial force from a gun member for providing a double action for setting a fastener of a type having a pin and a sleeve to be set thereto comprising: an elongated, generally tubular body member, a generally tubularly shaped outer anvil member disposed at one end of said body member and having an anvil portion forwardly disposed thereon for engagement with the sleeve of the fastener and being movable axially relative to said body member to a rst and a second position, a spring member disposed in said body member urging said outer anvil member axially outwardly toward said one end of said body to said first position at a selectable preload with said outer anvil member being movable rearwardly to said second position after said preload is overcome, means operatively associated with said spring member and said body member for varying said preload on said spring member, chuck jaw means disposed within said outer anvil and movable axially therein for gripping the pin of the fastener responsively to an axial force applied thereto relative to said outer anvil member, means operatively associated with said chuck jaw means and said body member for applying therebetween the relative axial force from the gun member, an inner anvil member disposed within said outer anvil member and being engageable with a portion of the sleeve of the fastener, and thrust means for reacting the load on said inner anvil member and for locating said inner anvil member at a preselected axial position relative to said outer anvil member and at a fixed position relative to said body member wherein said inner anvil member travels a preselected distance relative to said outer anvil member to operate on the fastener as said outer anvil member moves rearwardly against said preload of said spring member to said second position.

12. Apparatus operable in response to the application thereto of a relative axial force from a gun member for providing a double action for setting a fastener of a type having a pin and a sleeve to be set thereto cornprising: an elongated, generally tubular body member, a generally tubularly shaped outer anvil member disposed at one end of said body member and having an anvil portion forwardly disposed thereon for engagement with the sleeve of the fastener and being movable axially relative to said body member to a first and a second position, a coil spring disposed in said body member urging said outer anvil member axially outwardly toward said one end of said body to said first position at a selectable preload said outer anvil member being movable rearwardly to said second position after said preload is overcome, means operatively associated with said coil spring and said body member for varying said preload on said coil spring, chuck jaw means disposed within said outer anvil and movable axially therein for gripping the pin of the fastener responsively to an axial force applied thereto relative to said outer anvil member, means operatively associated with said chuck jaw means and said body member for applying therebetween the relative axial force from the gun member, an inner anvil member disposed within said outer anvil member and being .operatevon the fastener as said outer anvil member moves rearwardly against said preload of `said coil spring to said second position.

13. Apparatus operable in response to the application thereto ofa relative axialforce from a gun member for v providing a double action for setting a fastener of a type having a pin and .a sleeve to be set thereto comprising: an elongated, generally tubular body member, a `generally tubularly shaped outer anvil member disposed at one end of said body member and having an anvil portion forwardly disposed thereon for engagement with the sleeve of the fastener and being movable axially relative to said body member to a first and a second position, a spring member disposed in said body member urging said outer anvil member axially outwardly toward said one end of said body to said first position at a selectable preload, chuck jaw means disposed within said outer anvil and movable axially therein for gripping the pin of the fastener responsively to an axial force applied thereto relative to said outer anvil member, means operatively associated with said chuck jaw means and said-body member for applying therebetween the relative axial force from the gun member, an inner anvil member disposed within said outer anvil member and being engageable with a portion of the sleeve of the fastener, and a tubular thrust bushing engageable with said inner anvil member for reacting the load on said inner anvil member and being of a preselected length for locating said inner anvil member at a preselected axial position relative to said outer anvil member and for locating said inner anvil member at a fixed position relative to said body member as said outer anvil member moves rearwardly against said preload against said spring member.

14. Apparatus operable in response to the application thereto of relative axial force from a gun member vfor providing a double action for setting a fastener of the type having a pin and a sleeve to be set thereto, comprising an elongated, generally tubular body member, .a generally tubularly shaped outer anvil member disposed at one end of said body member and having an anvil portion forwardly disposed thereon for engagement with the sleeve of the fastener and being movable axially relative to said body member to a iirst and a second position, a spring member disposed in said body for urging said outer anvil member axially outwardly toward said one end of said body to said first position at a selectable preload, a preload adjustment member disposed at an opposite end of said body and in engagement with said spring member and being selectively movable relative to said body member for adjusting the preload of said spring member, chuck jaw means disposed within said outer anvil and movable axially therein for gripping the pin of the fastener responsively to an axial force applied thereto relative to said outer anvil member, means operatively associated with said chuck jaw means and said body member for applying therebetween the relative axial force from the gun member, said last named means including an adapter member secured to said preload adjustment member whereby said preload adjustment member can be moved simultaneously relative to said body member and to said adapter member, an inner anvil member disposed within said outer anvil member and being engageable with a portion of the sleeve of the fastener, and a tubular thrust bushing engageable at one end with said inner anvil member and at its opposite end with said adapter member for reacting the load on said inner anvil member and being of a preselected length for locating said inner anvil member at a preselected axial position relative to said outer anvil member and for locating said inner anvil member at a flxed position relative tosaid body member as said outer anvil member moves rearwardly against said preload of said spring member.

No references cited. 

1. APPARATUS OPERABLE IN RESPONSE TO THE APPLICATION THERETO OF A RELATIVE AXIAL FORCE FROM A GUN MEMBER FOR PROVIDING A DOUBLE ACTION FOR SETTING A FASTENER OF THE TYPE HAVING A PIN AND A SLEEVE TO BE SET THERETO COMPRISING AN ELONGATED GENERALLY TUBULAR BODY MEMBER, A GENERALLY TUBULARLY SHAPED OUTER ANVIL MEMBER DISPOSED AT ONE END OF SAID BODY AND HAVING AN ANVIL PORTION FORWARDLY DISPOSED THEREON FOR ENGAGEMENT WITH THE SLEEVE OF THE FASTENER AND BEING MOVABLE AXIALLY RELATIVE TO SAID BODY MEMBER TO A FIRST AND A SECOND POSITION, A SPRING MEMBER DISPOSED IN SAID BODY FOR URGING SAID OUTER ANVIL MEMBER AXIALLY OUTWARDLY TOWARD SAID ONE END OF SAID BODY TO SAID FIRST POSITION AT A SELECTABLE PRELOAD, CHUCK JAW MEANS DISPOSED WITHIN SAID OUTER ANVIL AND MOVABLE 